Hordeum caespitosum Scribn. ex Pammel Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Hordeum species Hordeum jubatum Name Homonyms Hordeum caespitosum Scribn. ex Pammel Hordeum caespitosum Scribn.